Pipe-wrench.



No. 838,665. PATENTED DEC. 18, 1906.

E. SUTHERLAND.

PIPE WRENCH.

A M1011 FILED NOV. 9', 190a.

wan 15 UNITED STATES.

PATENT ornon,

EMIL SUTHERLAND, or HOLLYWOOD. CALIFORNIA, ASSIGNOR TO T. W woonwoarn,or Los ANGELES,.CALIFORNIA.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Dec..18, 1906.

Application filed November 9,1905. Serial No. 286.613.

To (LN/ whom it ill/ by concern:

Be it known that I, EMIL SUTHERLAND, a citizen of the United States,residing at Hollywood, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Pipe-Wrenches,of which the following is a specification V The object of my inventionis to provide a handy, efiicient, and simple pipe-wrench which can beeasily manipulated with one hand, that will tightly hold the pipe inplace therein with sufiicient grip to prevent slipping on the pipe whenin use, that is easily adjusted for placement on diiferentsized pipesand easily removed therefrom. I accomplish these objects by means of thedevice described herein and shown in the accompanying drawings, in whichFigure 1 is a side view of my improved wrench in place on a section ofpipe, the wrench being in its operative position. Fig. 2 is a view,partly in elevation and partly in section, the handle being broken away,the wrench being in its open inoperative position. Fig. 3 is a plan viewof the edge thereof, the handle being in section and partly broken away.

In the drawings, A represents the outer grippingjaw, integrally attachedto the shank B. A handle C is provided with a projecting lug C, by whichit is pivotally at tached to the opposite end of the shank B, as at D.The inner sliding jaw E has a central opening therethrough for thereception and operation of the shank B. This jaw is provided on itsupper end with a socket, in which is pivoted gripping-lug F. This lug ispivoted in the upper end of the sliding jaw, as at G, and has on itsoutwardly-extending free end serrations H adapted to grip one side ofthe pipe operated on when the handle of the wrench is thrown upwardly inthe act of engaging the pipe, (assuming the wrench to be used on theunder side of the pipe, as shown in Fig. 1.) A spiral spring I is placedin a cavity F, formed in the lower part of the pivoted lug and extendingoutwardly therefrom and rests on the sliding jaw E. This spring willhold the pivoted lug in an upwardly and an outwardly extending positionuntil the serrations thereon engage the pipe to be operated on, when itwill drop down against and rest on the bottom of the recess in thesliding jaw, as shown in Fig. 1, and tightly hold the pipe pintle-boltsL.

operated on betweenit and the outer jaw A.

The sliding jaw E is pivotally connected at its lower end,'asat J, withthe cross-connecting links K. These links, two in number, are pivotallysecured at their other ends to the projecting lugs C on the handle bythe These links, one on eachside of the shank B, extend from thepintle-bolt L in the lugs on the handle to the pintle-bolt J in thelower end of the sliding jaw.

Assuming that the wrench is used in the position shown in Fig. 1 and issecured to the pipe from below, the jaws 'will be caused to grip thepipe M when the handle C is thrown upwardly. The forefinger of the handoperating the wrench will pass around under the shank B about where theyare pivoted to the sliding jaw, as at J, the thumb being placed on theprojecting lug C on the handle and pressure applied thereto. This willthrow the outer jaw up and cause the slidin jaw to advance toward theouter jaw and c ose the space between the jaws and grip any objecttherebetween. Then when the object operated on is gripped between. thejaws the elevation of the handle will cause the pipe held between thejaws to turn with the jaws. The moment the handle is dropped the jawswill spread apart and the wrench can be given a new grip on the pipe, orit can be removed, as desired.

The under ed e of the shank B is provided s;

jaws of the wrench for taking a new grip or removing the wrench. Thewrench being in the position shown in Fig. 2, the handle being down andthe jaws being open, when the handle is thrown upwardly into theposition shown in Fig. 1 the cross-connecting links K will push theunder endof the sliding jaw forwardly, carrying the jaw with it untilthe serrated lug F on the sliding jaw engages the pipe to be acted on,and the further movement upward of the handle will throw the lower partof the sliding jaw over into contact with the serrations B on the shankB and prevent any retrograde movement of the sliding jaw and hold theserrations firmly in contact with the pipe. The harder the strain of thehandle libward the tighter will i be the sliding jaw held in contactwith the shank by Inea'ns of the cross-connecting links.

Having described finy invention, what I 5 claim as new, and desire tosecure by Letters Patent, is

1. A pipe-wrench comprising a toothed shank having a fixed jaw on oneend, a handle pivotally attached to the opposite end of said 10 shank,said handle having a laterally-project- ,ing lug thereon, a jaw s idablymounted on the sha k), and provided with a rigid toothedj'portion'iadapted' to engage the toothed part ,ofthe shank, aconji'i'ecting-link having one of x5 'its ends pivotally'at'tached toone end of the 'slida'ble jaw and said connecting-link having "itsotherend similarly attachedto the laterally projecting'ilug on thehandle, whereby lateral "pressure' 'u poii the handle "in one direcbeheld or' tn'rned, I

2. A spa-wrench comprisin gfa toothed d'le' pivotally attached to the'opposite end of said's hank, said handle having a laterallyprojeetinglug thereon; a jaw slidably mounted on'the shank, 'and provided with arigid toothed portion adapted to engage the toothed part of the shank, agripping-lug pivotally connected to-the slidable jaw, a connecting-linkhaving one of its ends-pivotally attached to one end of the slidable jawand said'c'onneotin'g-link having its other end similarly attached tothe laterally-projecting lug on the handle, whereby lateral pressureup'on the ha-ndle in onedireetion causes a tighter grip"1' pon'- theobject to be held or turned.

